近距离中厚煤层群工作面瓦斯抽采方案设计

Design of gas drainage scheme in medium thick multiple coal seam working face with close distance

山西某矿为高瓦斯矿井,首采区初期开采的4号煤层上邻近层为03和2号煤层采空区,下邻近层为5号和6号煤层,首采4101工作面采用"U+U"型巷道布置及通风方式,针对该工作面邻近层和开采层瓦斯浓度较高和巷道布置特点,对该工作面瓦斯抽采方案进行了合理设计,并进行了效果预期,瓦斯抽采后对保证工作面和矿井的安全生产具有重要意义。

There is a high gas mine in Shanxi Province, upper neighboring No. 4 coal seam is 03 and No. 2 coal seam in goaf, down neighboring is No. 5 and No. 6 coal seam, initial mining 4101 working face adopted U＋U roadway layout and ventilation, based on the high content of gas and roadway layout of working face adjacent coal seam and mining seam, the gas drainage scheme was designed reasonably, with predicted effect, the drainage is with important significance of safe mining production.